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Note 7 - Patents | 6 Months Ended
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Jun. 30, 2022
Notes to Financial Statements |
Goodwill and Intangible Assets Disclosure [Text Block] | NOTE 7 — PATENTS
|  | June 30, 2022 |  |  |  |  |
|  | Cost |  |  | Accumulated Amortization |  |  | Net |
Patents-foundation intellectual property |  |  | 1,377,863 |  |  |  | (1,127,013 | ) |  |  | 250,850 |
Total |  |  | 1,377,863 |  |  |  | (1,127,013 | ) |  |  | 250,850 |
|  | December 31, 2021 |  |  |  |  |
|  | Cost |  |  | Accumulated Amortization |  |  | Net |
Patents-foundation intellectual property |  |  | 1,377,863 |  |  |  | (1,100,244 | ) |  |  | 277,619 |
Total |  |  | 1,377,863 |  |  |  | (1,100,244 | ) |  |  | 277,619 |
Patents are amortized utilizing the straight-line method over estimated useful lives ranging from 3 to 20 years. Amortization expense was approximately $13,000 and $27,000 for the three and six months ended June 30, 2022, respectively. Amortization expense was approximately $11,000 and $23,000 for the three and six months ended June 30, 2021, respectively The annual amortization expense expected to be recorded for existing intangibles assets for the years 2022 through 2026 and thereafter, is approximately $27,000, $52,000, $34,000, $28,000 and $110,000.

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI https://asc.fasb.org/topic&trid=2144416 + Details
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